The South Australian Government says pipelines to supply drinking water people in the lower lakes region at the Murray mouth are being laid in record time.

The $120 million federally-funded project involves about 130 kilometres of pipelines to supply water from Strathalbyn and Tailem Bend to Langhorne Creek, Raukkan and Narrung.

SA Water Security Minister Karlene Maywald says securing drinking water, other than from the drought-striken lakes, will not mean the proposed weir upstream on the Murray near Wellington will be going ahead.

"We're not actually building this pipeline in anticipation of a weir," she said.

"We're building this pipeline because people need water."

The Government has investigated the weir proposal as a way of holding supplies from the Murray to safeguard Adelaide's water needs.

Premier Mike Rann says the pipelines project is well advanced.

"This was announced in July and then you hear people saying 'Yeah, but when will it happen?' Well we've been laying pipes at a rate of three-and-a-half to four kilometres each day so we hope by early January to have this completed and in operation," he said.

The pipelines water is not to be used for irrigation.

Farmer Clem Mason will spend $17,000 connecting his property to the pipelines but says it will be worth it.

"Everybody is just so happy to pay that because they know the value that it's going to add to their property, they know that without it they can't go on," he said.